Sonic fan-made dōjinshi made by a variety of artists (including Rikdo Koshi) have also been released in Japan. In the UK there was also a short lived Sunday comic strip and a series of Christmas annuals. Whilst there were some slight connections (such as both projects occasionally using regular Sonic the Comic artists Richard Elson), the three projects appeared strongly to be separate from one another with the Sunday comic and annuals preferring self contained gag strips over Sonic the Comic's continuing plot lines and maturer stance.

James Wallis, Carl Sargent and Marc Gascoigne (writing under the pseudonym Martin Adams) wrote four Sonic the Hedgehog novels based on his origin established in Stay Sonic. They were published in the UK by Virgin Publishing.

Sonic the Hedgehog in the Fourth Dimension 1993 - Sonic and Tails try to prevent Robotnik from altering history, encountering the Organisers - human scientists who maintain the laws of Time and Space - and helping them against the mythos creatures, paramilitary mythological creatures who are trying to exist in reality. Sonic briefly altered history so Robotnik was never formed, but had to change it back to stop the mythos creatures altering the Big Bang.

Sonic the Hedgehog and the Silicon Warriors 1993 - Robotnik imprisons Mobians inside a vast computer system, forcing Sonic and Tails to battle thinly-veiled versions of other computer game characters (Road Warriors II). It featured many puns and frequent breachings of the fourth wall, with Sonic directly talking to the reader on several ocassions.

Sonic the Hedgehog in Castle Robotnik 1994 - Robotnik creates a robotic duplicate of Sonic and situates himself in a classic horror movie villain castle, protected by likewise common horror movie creatures.

In the US, the first Troll Associates book by Michael Teitenbaum was adapted into a picture book published by Watermill Press. The picture book was written by by Judy Nayer and illustrated by Ron Zalme.

Three books, written by John Michlig and illustrated by Art Mawhinney, were published by Golden Books Entertainment under their "Look Look Books" banner. Originally available through Scholastic book clubs, these books have sold a combined total of over half a million copies worldwide. While the two who worked on the books never met, Michlig later praised the way Mawhinney drew out his scripts.[2]

Two yearbooks were published by Grandreams Limited. These featured one-shot comics normally involving Sonic foiling Dr Robotnik's plans (but included one Shinobi comic), Sega game reviews and other novelty Sonic and Sega-related features such as an "interview with Sonic".

Look and Find Sonic the Hedgehog - Another book similar to Where's Waldo; each page is a puzzle with hidden objects and characters from the SatAM storyline, but in locations from Sonic games on the Genesis. (ISBN 0-7853-1139-4)